Timothy Leiweke is president and CEO of AEG, one of the world's leading presenters of sports and entertainment programming. Since joining AEG, he has acquired or merged more than 50 divisions and companies to create a global live entertainment organization that develops, produces, promotes, markets and manages sports and entertainment programming in both facilities owned and operated by AEG as well as other venues. Divisions under Leiweke's direction include AEG Live, which creates, produces and promotes live entertainment, and AEG Facilities, which operates more than 100 of the world's pre-eminent venues. Leiweke has helped remake downtown Los Angeles with the Staples Center - built under his direction in a record 18 months - and the 4 million-square-foot L.A. Live complex, a privately financed $2.5 billion sports and entertainment district that features five venues, 18 restaurants and clubs, residences and a 54-story convention "headquarters" hotel.